3-Amino-2-(bromomethyl)-5-(difluoromethyl)pyridine-4-methanol
2-Amino-5-(chloromethyl)-3-(difluoromethyl)pyridine-4-acetic acid
2-Amino-5-(bromomethyl)-3-(difluoromethyl)pyridine-6-acetonitrile
2-Amino-4-(chloromethyl)-5-(difluoromethyl)pyridine-3-acetic acid